ProtocolException with iOS .NET 6.0 Application: The number of bytes available is inconsistent with the HTTP Content-Length header.

[DuncWatts]

I'm porting some code over from an existing Xamarin.Forms application however the WCF client I've written fails when run as a .NET 6.0 iOS application.

As WCF connected services don't work within iOS due to the restrictions on emitted code, I use a reference generated by the Silverlight tooling as a workaround and add System.ServiceModel.Http to use it.

Steps to Reproduce

I've found a random soap service to demonstrate this (http://www.dneonline.com/calculator.asmx?WSDL) and created a .NET Standard 2.0 class library that contains the WCF client and the code that calls it. I've then created a simple .NET 6.0 iOS application and a Xamarin.iOS application that executes that code that calls the webservice. In the Xamarin.iOS application it can correctly call the webservice while the .NET 6.0 iOS application fails with the stack trace below.

Expected Behavior

Web service is called correctly

Actual Behavior

Exception thrown when calling web service:

[0:] System.ServiceModel.ProtocolException: The number of bytes available is inconsistent with the HTTP Content-Length header.  There may have been a network error or the client may be sending invalid requests.
   at System.ServiceModel.Channels.HttpResponseMessageHelper.ReadBufferedMessageAsync(Task`1 inputStreamTask, TimeoutHelper timeoutHelper)
   at System.ServiceModel.Channels.HttpResponseMessageHelper.ParseIncomingResponse(TimeoutHelper timeoutHelper)
   at System.ServiceModel.Channels.HttpChannelFactory`1.HttpClientRequestChannel.HttpClientChannelAsyncRequest.<ReceiveReplyAsync>d__17[[System.ServiceModel.Channels.IRequestChannel, System.Private.ServiceModel, Version=4.10.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]].MoveNext()
   at System.ServiceModel.Channels.RequestChannel.RequestAsync(Message message, TimeSpan timeout)
   at System.ServiceModel.Channels.RequestChannel.RequestAsyncInternal(Message message, TimeSpan timeout)
   at System.Runtime.AsyncResult.End[SendAsyncResult](IAsyncResult result)
   at System.ServiceModel.Channels.ServiceChannel.SendAsyncResult.End(SendAsyncResult result)
   at System.ServiceModel.Channels.ServiceChannel.EndCall(String action, Object[] outs, IAsyncResult result)
   at System.ServiceModel.ClientBase`1.ChannelBase`1[[WcfExample.CalculatorSoap, WcfExample, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[WcfExample.CalculatorSoap, WcfExample, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].EndInvoke(String methodName, Object[] args, IAsyncResult result)
   at WcfExample.CalculatorSoapClient.CalculatorSoapClientChannel.EndAdd(IAsyncResult result) in C:\Users\me\source\repos\WcfExample\WcfExample\CalculatorService.cs:line 594
   at WcfExample.CalculatorSoapClient.WcfExample.CalculatorSoap.EndAdd(IAsyncResult result) in C:\Users\me\source\repos\WcfExample\WcfExample\CalculatorService.cs:line 258
   at System.Threading.Tasks.TaskFactory`1[[System.Int32, System.Private.CoreLib, Version=6.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].FromAsyncCoreLogic(IAsyncResult , Func`2 , Action`1 , Task`1 , Boolean )
--- End of stack trace from previous location ---
   at WcfExample.Example.AddAsync(Int32 a, Int32 b) in C:\Users\me\source\repos\WcfExample\WcfExample\Example.cs:line 14
   at WcfExample.iOS.Net6.AppDelegate.<>c.<<FinishedLaunching>b__4_0>d.MoveNext() in C:\Users\me\source\repos\WcfExample\WcfExample.iOS.Net6\AppDelegate.cs:line 29

Environment

Version information

Microsoft Visual Studio Enterprise 2022
Version 17.4.0 Preview 1.0
VisualStudio.17.Preview/17.4.0-pre.1.0+32804.182
Microsoft .NET Framework
Version 4.8.04084

Installed Version: Enterprise

Visual C++ 2022   00476-80000-00000-AA112
Microsoft Visual C++ 2022

ADL Tools Service Provider   1.0
This package contains services used by Data Lake tools

ASA Service Provider   1.0

ASP.NET and Web Tools   17.4.86.38009
ASP.NET and Web Tools

Azure App Service Tools v3.0.0   17.4.86.38009
Azure App Service Tools v3.0.0

Azure Data Lake Tools for Visual Studio   2.6.5000.0
Microsoft Azure Data Lake Tools for Visual Studio

Azure Functions and Web Jobs Tools   17.4.86.38009
Azure Functions and Web Jobs Tools

Azure Stream Analytics Tools for Visual Studio   2.6.5000.0
Microsoft Azure Stream Analytics Tools for Visual Studio

C# Tools   4.4.0-1.22403.13+ebbf56c257fb4d3128d3487ef525d92e9f94b412
C# components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Common Azure Tools   1.10
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

Extensibility Message Bus   1.4.1 (main@2ee106a)
Provides common messaging-based MEF services for loosely coupled Visual Studio extension components communication and integration.

Microsoft Azure Hive Query Language Service   2.6.5000.0
Language service for Hive query

Microsoft Azure Stream Analytics Language Service   2.6.5000.0
Language service for Azure Stream Analytics

Microsoft Azure Tools for Visual Studio   2.9
Support for Azure Cloud Services projects

Microsoft JVM Debugger   1.0
Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines

Mono Debugging for Visual Studio   17.4.0 (d412e49)
Support for debugging Mono processes with Visual Studio.

NuGet Package Manager   6.4.0
NuGet Package Manager in Visual Studio. For more information about NuGet, visit https://docs.nuget.org/

Project System Tools   1.0
Tools for working with C#, VisualBasic, and F# projects.

Razor (ASP.NET Core)   17.0.0.2237602+b10895cdddd2286fe448ca44dfeb6f9c2c4f6abd
Provides languages services for ASP.NET Core Razor.

SQL Server Data Tools   17.0.62207.28050
Microsoft SQL Server Data Tools

ToolWindowHostedEditor   1.0
Hosting json editor into a tool window

TypeScript Tools   17.0.10727.2001
TypeScript Tools for Microsoft Visual Studio

Visual Basic Tools   4.4.0-1.22403.13+ebbf56c257fb4d3128d3487ef525d92e9f94b412
Visual Basic components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Visual F# Tools   17.4.0-beta.22376.4+0e8a2053cc2fc7d3801205a873e0afd3b6a1235e
Microsoft Visual F# Tools

Visual Studio IntelliCode   2.2
AI-assisted development for Visual Studio.

VisualStudio.DeviceLog   1.0
Information about my package

VisualStudio.Mac   1.0
Mac Extension for Visual Studio

VSPackage Extension   1.0
VSPackage Visual Studio Extension Detailed Info

Xamarin   17.4.0.95 (main@de68f64)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.

Xamarin Designer   17.4.0.32 (remotes/origin/d17-4@439b92ed7b)
Visual Studio extension to enable Xamarin Designer tools in Visual Studio.

Xamarin Templates   17.4.1 (0b2b400)
Templates for building iOS, Android, and Windows apps with Xamarin and Xamarin.Forms.

Xamarin.Android SDK   13.0.99.36 (main/b4998c8)
Xamarin.Android Reference Assemblies and MSBuild support.
    Mono: dffa5ab
    Java.Interop: xamarin/java.interop/main@032f1e71
    SQLite: xamarin/sqlite/3.39.2@40e8743
    Xamarin.Android Tools: xamarin/xamarin-android-tools/main@9c641b3


Xamarin.iOS and Xamarin.Mac SDK   15.13.0.6 (af0b05917)
Xamarin.iOS and Xamarin.Mac Reference Assemblies and MSBuild support.

Build Logs

msbuild.zip

Example Project (If Possible)

WcfExample.zip

[chamons]

Given all of the assemblies in the stack trace are BCL (Base Class Library), in particular System.ServiceModel.*, I believe this should be looked at by the dotnet folks first.

[chamons]

This issue was moved to dotnet/wcf#4903